concept

sharks

Facts (14)

Sources

Electroreception and electrogenesis - Wikipedia en.wikipedia.org Wikipedia 5 facts

claimThe ampullae of Lorenzini are electroreceptive organs that evolved early in vertebrate history and are found in cartilaginous fishes (such as sharks) and bony fishes (such as coelacanths and sturgeons).

referenceJayne M. Gardiner, Jelle Atema, Robert E. Hueter, and Philip J. Motta authored 'Multisensory Integration and Behavioral Plasticity in Sharks from Different Ecological Niches', published in PLOS One on 2 April 2014.

accountIn 1678, Italian physician Stefano Lorenzini discovered the organs on the heads of sharks now known as the ampullae of Lorenzini, publishing his findings in 'Osservazioni intorno alle torpedini'.

claimSharks and rays (Elasmobranchii) rely on electrolocation using their ampullae of Lorenzini during the final stages of their attacks.

measurementSharks are the most electrically sensitive animals known, as they respond to direct current fields as low as 5 nV/cm.

Moon phase and fish behavior - North Carolina Sea Grant ncseagrant.ncsu.edu North Carolina Sea Grant Jan 27, 2025 3 facts

referenceThe 2024 scientific paper 'Lunar cycle effects on pelagic predators and fisheries: insights into tuna, billfish, sharks, and rays' by Andrzejaczek et al., published in Rev Fish Biol Fisheries, investigates the biological and behavioral impacts of the lunar cycle on tuna, billfish, sharks, and rays.

claimA review of 190 previous studies on the lunar cycle's effect on fish behavior focused on large, surface-level species, specifically tuna, billfish, sharks, and rays.

claimMost sharks showed increased activity during full moons, with some showing increased activity at new moons as well.

Lunar Cycles And the Underwater World dipndive.com DipNDive 2 facts

claimYellowfin tuna and bigeye tuna exhibit similar lunar-linked swimming patterns to sharks, moving between deep and shallow waters based on the lunar cycle.

claimSharks tend to stay in deep water during the full moon and move to shallow waters during the new moon.

How Does the Moon Affect Marine Life Behavior? | Scuba Diving scubadiving.com Scuba Diving Dec 15, 2021 2 facts

claimDr. David Shiffman is a marine conservation biologist who specializes in the ecology and conservation of sharks.

claimDavid Shiffman answers questions about sharks on his social media platforms.

How the Full Moon Affects the Behavior of Animals ruhighlander.org Austin Price · The Highlander May 2, 2024 1 fact

claimAccording to The Weather Network, various animals, including oysters, coral reefs, and sharks, exhibit behavioral changes during a full moon.

Electric fish - Wikipedia en.wikipedia.org Wikipedia 1 fact

claimAmpullae of Lorenzini are present in cartilaginous fishes (sharks, rays, and chimaeras), lungfishes, bichirs, coelacanths, sturgeons, paddlefish, aquatic salamanders, and caecilians.